Fairfield, KY 40020 Frost Dates
Frost dates for Fairfield, KY, ZIP 40020
The last spring frost here typically falls around 04/23, about 238 days from today. The first fall frost typically arrives around 10/16, about 176 frost-free days later.
Fairfield sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 6b around Fairfield has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Fairfield's last frost
04/23 is the middle of 30 years of NOAA records, not a promise. Plant by 04/08 and you're betting against frost in roughly 9 years out of 10. 05/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Fairfield compares
About 176 days separate Fairfield's last and first frost, putting it 26,668 of 40,283 ZIP codes nationally. Within KY, it ranks 824 of 909.
Learn more
local microclimates explains what one yard in Fairfield can differ from the 40020 normal, and zone vs. frost date explains why Zone 6b and Fairfield's frost date answer different questions.